公开(公告)号：US11424446B2

公开(公告)日：2022-08-23

申请号：US16182890

申请日：2018-11-07

Applicant: KOREA BASIC SCIENCE INSTITUTE

Inventor： Yeon Ho Kim ,  Hae Jin Kim ,  Won Gi Hong ,  Jong Guk Kim

IPC: H01M4/52 ,  H01M10/0525 ,  H01M4/62 ,  H01M50/411 ,  H01M4/02

Abstract: Provided are an anode active material for secondary battery which includes porous iron oxide nanoparticles, a manufacturing method thereof, and a secondary battery including the same. The anode active material for secondary battery of the present disclosure minimizes a volume change of iron oxide caused by intercalation and deintercalation of lithium even during consecutive charges and discharges and thus can improve the capacity and lifespan characteristics of a secondary battery employing the anode active material. Further, the manufacturing method of an anode active material for secondary battery makes it possible to manufacture an anode active material for secondary battery including iron oxide nanoparticles in an environmentally friendly and simple manner and thus makes it possible to mass-produce the anode active material.

公开(公告)号：US10522826B2

公开(公告)日：2019-12-31

申请号：US15818635

申请日：2017-11-20

Applicant: Korea Basic Science Institute

Inventor： Jin Bae Lee ,  Hae Jin Kim ,  Won Gi Hong ,  Sang Moon Lee ,  Yeon Ho Kim

IPC: H01M4/36 ,  H01M4/50 ,  H01M4/02

Abstract: The present disclosure relates to manganese oxide nano-rods in the form of a core-shell, in which the manganese oxide nano-rods are formed in a core-shell structure, the core and the shell each include MnxOy, when x of MnxOy of the core is 1 and y is 2, x of MnxOy of the shell is 2 and y is 3, and when x of MnxOy of the core is 2 and y is 3, x of MnxOy of the shell is 1 and y is 2. According to the present disclosure, in the secondary battery using the manganese oxide, the elution of manganese is inhibited and the structural stability of an active material is increased, thereby increasing the capacity and the cycle life at a high temperature.